hz4th_coder
121521456d
功能特性： - 支持柱状图、折线图、混合图 - 支持多系列数据对比 - 支持拖拽调整系列顺序和自定义颜色 - 支持区域分割（左右对比） - 5种主题风格可选 - 支持导出PNG/SVG - 响应式布局，适配移动端
608 lines
20 KiB
JavaScript
608 lines
20 KiB
JavaScript
// ===== 全局状态 =====
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let chartInstance = null;
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let parsedData = null;
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let seriesColors = [];
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let seriesOrder = [];
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// ===== 预设颜色方案 =====
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const colorPalettes = {
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default: ['#5470c6', '#91cc75', '#fac858', '#ee6666', '#73c0de', '#3ba272', '#fc8452', '#9a60b4', '#ea7ccc'],
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dark: ['#4fc3f7', '#81c784', '#fff176', '#ff8a65', '#ba68c8', '#4dd0e1', '#ffab91', '#aed581', '#f48fb1'],
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macarons: ['#2ec7c9', '#b6a2de', '#5ab1ef', '#ffb980', '#d87a80', '#8d98b3', '#e5cf0d', '#97b552', '#95706d'],
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gradient: ['#7f7fd5', '#86a8e7', '#91eae4', '#ff6b6b', '#feca57', '#48dbfb', '#ff9ff3', '#54a0ff', '#5f27cd'],
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retro: ['#d4a5a5', '#95b9c7', '#f6e8c3', '#dfceb4', '#a4c3b5', '#c9b1ff', '#f5c7b8', '#b8d4e3', '#e8c8a0']
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};
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// ===== 示例数据 =====
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const sampleDataSets = [
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{
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name: '季度销售对比',
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data: `产品, Q1, Q2, Q3, Q4
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手机, 1200, 1800, 2100, 2500
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平板, 800, 950, 1100, 1300
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笔记本, 600, 750, 900, 1050
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耳机, 400, 520, 680, 800`
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},
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{
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name: '年度增长趋势',
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data: `指标, 2020年, 2021年, 2022年, 2023年, 2024年
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营收(万), 500, 680, 820, 1050, 1380
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利润(万), 80, 120, 160, 230, 350
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用户(千), 50, 85, 130, 200, 320`
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},
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{
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name: '多指标对比（适合区域分割）',
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data: `月份, 方案A-效率, 方案A-成本, 方案B-效率, 方案B-成本
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1月, 85, 120, 78, 135
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2月, 88, 115, 82, 128
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3月, 92, 108, 88, 120
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4月, 90, 112, 95, 110
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5月, 95, 105, 98, 105
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6月, 98, 98, 102, 95`
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}
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];
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// ===== 初始化 =====
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document.addEventListener('DOMContentLoaded', () => {
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// 默认加载第一个示例
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document.getElementById('dataInput').value = sampleDataSets[0].data;
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generateChart();
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});
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// ===== 数据解析 =====
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function parseData(rawText) {
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const lines = rawText.trim().split('\n').filter(l => l.trim());
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if (lines.length < 2) {
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alert('数据至少需要包含表头和一行数据');
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return null;
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}
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// 自动检测分隔符
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let delimiter = ',';
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if (lines[0].includes('\t')) {
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delimiter = '\t';
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} else if (lines[0].split('|').length > lines[0].split(',').length) {
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delimiter = '|';
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}
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const rows = lines.map(line => {
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return line.split(delimiter).map(cell => cell.trim());
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});
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const headers = rows[0];
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const categories = [];
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const seriesData = {};
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// 第一列是横坐标，其余列是系列
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for (let i = 1; i < headers.length; i++) {
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seriesData[headers[i]] = [];
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}
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for (let i = 1; i < rows.length; i++) {
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categories.push(rows[i][0]);
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for (let j = 1; j < rows[i].length && j < headers.length; j++) {
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const val = parseFloat(rows[i][j]);
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seriesData[headers[j]].push(isNaN(val) ? 0 : val);
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}
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}
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return {
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categories,
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seriesNames: headers.slice(1),
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seriesData
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};
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}
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// ===== 生成图表 =====
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function generateChart() {
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const rawText = document.getElementById('dataInput').value;
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if (!rawText.trim()) {
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alert('请输入数据');
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return;
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}
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parsedData = parseData(rawText);
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if (!parsedData) return;
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// 初始化系列顺序和颜色
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seriesOrder = parsedData.seriesNames.map((_, i) => i);
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const palette = colorPalettes[document.getElementById('themeStyle').value] || colorPalettes.default;
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seriesColors = parsedData.seriesNames.map((_, i) => palette[i % palette.length]);
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// 渲染系列配置
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renderSeriesConfig();
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// 初始化图表
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initChart();
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updateChart();
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}
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// ===== 初始化图表实例 =====
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function initChart() {
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const chartDom = document.getElementById('chartArea');
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chartDom.innerHTML = '';
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if (chartInstance) {
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chartInstance.dispose();
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}
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chartInstance = echarts.init(chartDom, null, { renderer: 'canvas' });
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// 响应式
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window.addEventListener('resize', () => {
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chartInstance && chartInstance.resize();
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});
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}
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// ===== 更新图表 =====
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function updateChart() {
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if (!parsedData || !chartInstance) return;
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const chartType = document.getElementById('chartType').value;
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const title = document.getElementById('chartTitle').value;
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const theme = document.getElementById('themeStyle').value;
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const showLegend = document.getElementById('showLegend').checked;
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const showGrid = document.getElementById('showGrid').checked;
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const showLabel = document.getElementById('showLabel').checked;
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const stackMode = document.getElementById('stackMode').checked;
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const smoothLine = document.getElementById('smoothLine').checked;
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const enableSplit = document.getElementById('enableSplit').checked;
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// 显示/隐藏分割配置
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document.getElementById('splitConfig').style.display = enableSplit ? 'block' : 'none';
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// 背景色
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const bgColor = theme === 'dark' ? '#1a1a2e' : '#ffffff';
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const textColor = theme === 'dark' ? '#e0e0e0' : '#333333';
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const axisLineColor = theme === 'dark' ? '#444' : '#ddd';
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// 按当前顺序构建系列
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const palette = colorPalettes[theme] || colorPalettes.default;
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const series = seriesOrder.map((origIdx, displayIdx) => {
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const name = parsedData.seriesNames[origIdx];
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const data = parsedData.seriesData[name];
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const color = seriesColors[origIdx] || palette[origIdx % palette.length];
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let type = chartType === 'bar-line'
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? (displayIdx % 2 === 0 ? 'bar' : 'line')
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: chartType;
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const seriesItem = {
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name: name,
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type: type,
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data: [...data],
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itemStyle: { color: color },
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emphasis: {
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focus: 'series',
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itemStyle: {
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shadowBlur: 10,
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shadowColor: 'rgba(0,0,0,0.3)'
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}
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}
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};
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// 堆叠
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if (stackMode) {
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seriesItem.stack = 'total';
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}
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// 折线图特有
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if (type === 'line') {
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seriesItem.smooth = smoothLine;
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seriesItem.lineStyle = { width: 3 };
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seriesItem.symbolSize = 8;
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seriesItem.areaStyle = theme === 'gradient' ? {
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opacity: 0.15
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} : undefined;
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}
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// 柱状图特有
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if (type === 'bar') {
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seriesItem.barMaxWidth = 40;
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seriesItem.itemStyle.borderRadius = stackMode ? [0, 0, 0, 0] : [4, 4, 0, 0];
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if (theme === 'gradient') {
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seriesItem.itemStyle.color = new echarts.graphic.LinearGradient(0, 0, 0, 1, [
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{ offset: 0, color: color },
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{ offset: 1, color: adjustColor(color, 40) }
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]);
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}
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}
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// 数据标签
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if (showLabel) {
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seriesItem.label = {
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show: true,
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position: type === 'bar' ? 'top' : 'top',
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fontSize: 11,
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color: textColor,
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formatter: (params) => {
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if (params.value >= 10000) return (params.value / 10000).toFixed(1) + 'w';
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if (params.value >= 1000) return (params.value / 1000).toFixed(1) + 'k';
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return params.value;
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}
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};
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}
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return seriesItem;
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});
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// 区域分割 - 使用 graphic 组件精确画分割线在柱子间隙中
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const graphicElements = [];
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if (enableSplit) {
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const splitIdx = parseInt(document.getElementById('splitIndex').value) || 3;
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const leftLabel = document.getElementById('leftLabel').value || '左侧';
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const rightLabel = document.getElementById('rightLabel').value || '右侧';
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const splitStyle = document.getElementById('splitStyle').value;
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if (splitIdx < parsedData.categories.length) {
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// 区域背景色用 markArea
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const splitLineColor = theme === 'dark' ? '#ff6b6b' : '#e74c3c';
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if (series.length > 0) {
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series[0].markArea = {
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silent: true,
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data: [
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[
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{
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name: leftLabel,
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xAxis: parsedData.categories[0],
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itemStyle: {
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color: theme === 'dark' ? 'rgba(79,195,247,0.06)' : 'rgba(79,70,229,0.05)',
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borderWidth: 0
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},
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label: {
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show: true,
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position: 'insideTop',
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fontSize: 13,
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fontWeight: 'bold',
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color: theme === 'dark' ? '#4fc3f7' : '#4f46e5',
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offset: [0, 10]
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}
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},
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{ xAxis: parsedData.categories[splitIdx - 1] }
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],
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[
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{
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name: rightLabel,
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xAxis: parsedData.categories[splitIdx],
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itemStyle: {
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color: theme === 'dark' ? 'rgba(255,107,107,0.06)' : 'rgba(239,68,68,0.05)',
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borderWidth: 0
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},
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label: {
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show: true,
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position: 'insideTop',
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fontSize: 13,
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fontWeight: 'bold',
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color: theme === 'dark' ? '#ff6b6b' : '#ef4444',
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offset: [0, 10]
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}
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},
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{ xAxis: parsedData.categories[parsedData.categories.length - 1] }
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]
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]
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};
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}
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// 用 graphic 组件在渲染后画分割线（在柱子间隙中）
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// 先存到全局，在 setOption 后通过 rendered 事件绘制
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window._splitConfig = { splitIdx, splitLineColor, splitStyle, theme };
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} else {
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window._splitConfig = null;
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}
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} else {
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window._splitConfig = null;
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}
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// 图表配置
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const option = {
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backgroundColor: bgColor,
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title: title ? {
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text: title,
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left: 'center',
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top: 15,
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textStyle: {
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color: textColor,
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fontSize: 18,
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fontWeight: 600
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}
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} : undefined,
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tooltip: {
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trigger: 'axis',
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backgroundColor: theme === 'dark' ? 'rgba(30,30,50,0.95)' : 'rgba(255,255,255,0.95)',
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borderColor: theme === 'dark' ? '#555' : '#eee',
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textStyle: { color: textColor },
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axisPointer: {
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type: chartType === 'bar' ? 'shadow' : 'cross',
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crossStyle: { color: '#999' }
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},
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formatter: function(params) {
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let html = `<div style="font-weight:600;margin-bottom:6px">${params[0].axisValue}</div>`;
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params.forEach(p => {
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html += `<div style="display:flex;align-items:center;gap:6px;margin:3px 0">
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<span style="display:inline-block;width:10px;height:10px;border-radius:50%;background:${p.color}"></span>
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<span>${p.seriesName}:</span>
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<span style="font-weight:600">${p.value.toLocaleString()}</span>
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</div>`;
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});
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return html;
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}
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},
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legend: showLegend ? {
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show: true,
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top: title ? 50 : 15,
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textStyle: { color: textColor, fontSize: 12 },
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itemGap: 20,
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icon: 'roundRect'
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} : { show: false },
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grid: {
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left: '3%',
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right: '4%',
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bottom: '3%',
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top: showLegend ? (title ? 90 : 60) : (title ? 60 : 30),
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containLabel: true
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},
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xAxis: {
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type: 'category',
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data: parsedData.categories,
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axisLine: { lineStyle: { color: axisLineColor } },
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axisLabel: {
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color: textColor,
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fontSize: 12,
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interval: 0,
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rotate: parsedData.categories.length > 10 ? 30 : 0
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},
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axisTick: { show: false }
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},
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yAxis: {
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type: 'value',
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axisLine: { show: false },
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axisTick: { show: false },
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axisLabel: { color: textColor, fontSize: 11 },
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splitLine: {
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show: showGrid,
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lineStyle: {
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color: theme === 'dark' ? '#333' : '#f0f0f0',
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type: 'dashed'
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}
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}
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},
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series: series,
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animationDuration: 800,
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animationEasing: 'cubicOut'
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};
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chartInstance.setOption(option, true);
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// 绘制分割线（在 category 间隙中）
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drawSplitLine();
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}
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// ===== 在柱子间隙中精确绘制分割线 =====
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function drawSplitLine() {
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if (!chartInstance || !window._splitConfig) {
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if (chartInstance) {
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chartInstance.setOption({ graphic: { elements: [] } });
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}
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return;
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}
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const { splitIdx, splitLineColor, splitStyle } = window._splitConfig;
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// 使用 convertToPixel 获取 category 的像素坐标（x位置）
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const leftX = chartInstance.convertToPixel({ xAxisIndex: 0 }, splitIdx - 1);
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const rightX = chartInstance.convertToPixel({ xAxisIndex: 0 }, splitIdx);
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const midX = (leftX + rightX) / 2;
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// 使用内部 coordinateSystem 获取精确的绘图区域边界
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// 这是ECharts内部稳定可用的接口
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const gridRect = chartInstance.getModel()
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.getComponent('grid', 0)
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.coordinateSystem.getRect();
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const yTop = gridRect.y;
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const yBottom = gridRect.y + gridRect.height;
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// 虚线样式
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let lineDash = null;
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if (splitStyle === 'dashed') lineDash = [8, 4];
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else if (splitStyle === 'dotted') lineDash = [3, 3];
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chartInstance.setOption({
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graphic: {
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elements: [
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{
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type: 'line',
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shape: {
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x1: midX,
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y1: yTop,
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x2: midX,
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y2: yBottom
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},
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style: {
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stroke: splitLineColor,
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lineWidth: 2,
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lineDash: lineDash
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},
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z: 100
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}
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]
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}
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});
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}
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// ===== 渲染系列配置 =====
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function renderSeriesConfig() {
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const container = document.getElementById('seriesConfig');
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container.innerHTML = '';
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seriesOrder.forEach((origIdx, displayIdx) => {
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const name = parsedData.seriesNames[origIdx];
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const color = seriesColors[origIdx];
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const item = document.createElement('div');
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item.className = 'series-item';
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item.draggable = true;
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item.dataset.index = displayIdx;
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item.innerHTML = `
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<span class="drag-handle">⠿</span>
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<span class="series-name">${name}</span>
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<input type="color" value="${color}" onchange="updateSeriesColor(${origIdx}, this.value)">
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<select onchange="updateSeriesType(${origIdx}, this.value)">
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<option value="auto">自动</option>
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<option value="bar">柱状</option>
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<option value="line">折线</option>
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</select>
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`;
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// 拖拽事件
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item.addEventListener('dragstart', handleDragStart);
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item.addEventListener('dragover', handleDragOver);
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item.addEventListener('drop', handleDrop);
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item.addEventListener('dragend', handleDragEnd);
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container.appendChild(item);
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});
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}
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// ===== 拖拽排序 =====
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let draggedItem = null;
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function handleDragStart(e) {
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draggedItem = this;
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this.classList.add('dragging');
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e.dataTransfer.effectAllowed = 'move';
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}
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function handleDragOver(e) {
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e.preventDefault();
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e.dataTransfer.dropEffect = 'move';
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const rect = this.getBoundingClientRect();
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const midY = rect.top + rect.height / 2;
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if (e.clientY < midY) {
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this.style.borderTopColor = 'var(--primary)';
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this.style.borderTopWidth = '2px';
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} else {
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this.style.borderBottomColor = 'var(--primary)';
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this.style.borderBottomWidth = '2px';
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}
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}
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function handleDrop(e) {
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e.preventDefault();
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// 清除样式
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document.querySelectorAll('.series-item').forEach(item => {
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item.style.borderTopColor = '';
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item.style.borderTopWidth = '';
|
||
item.style.borderBottomColor = '';
|
||
item.style.borderBottomWidth = '';
|
||
});
|
||
|
||
if (draggedItem === this) return;
|
||
|
||
const fromIdx = parseInt(draggedItem.dataset.index);
|
||
const toIdx = parseInt(this.dataset.index);
|
||
|
||
// 交换顺序
|
||
const temp = seriesOrder[fromIdx];
|
||
seriesOrder[fromIdx] = seriesOrder[toIdx];
|
||
seriesOrder[toIdx] = temp;
|
||
|
||
renderSeriesConfig();
|
||
updateChart();
|
||
}
|
||
|
||
function handleDragEnd() {
|
||
this.classList.remove('dragging');
|
||
document.querySelectorAll('.series-item').forEach(item => {
|
||
item.style.borderTopColor = '';
|
||
item.style.borderTopWidth = '';
|
||
item.style.borderBottomColor = '';
|
||
item.style.borderBottomWidth = '';
|
||
});
|
||
}
|
||
|
||
// ===== 系列操作 =====
|
||
function updateSeriesColor(origIdx, color) {
|
||
seriesColors[origIdx] = color;
|
||
updateChart();
|
||
}
|
||
|
||
function updateSeriesType(origIdx, type) {
|
||
// 存储自定义类型覆盖
|
||
if (!window.seriesTypeOverrides) window.seriesTypeOverrides = {};
|
||
window.seriesTypeOverrides[origIdx] = type;
|
||
updateChart();
|
||
}
|
||
|
||
// ===== 工具函数 =====
|
||
function adjustColor(hex, amount) {
|
||
hex = hex.replace('#', '');
|
||
const num = parseInt(hex, 16);
|
||
let r = Math.min(255, ((num >> 16) & 0xff) + amount);
|
||
let g = Math.min(255, ((num >> 8) & 0xff) + amount);
|
||
let b = Math.min(255, (num & 0xff) + amount);
|
||
return `rgb(${r},${g},${b})`;
|
||
}
|
||
|
||
function loadSampleData() {
|
||
// 循环切换示例
|
||
const currentIdx = sampleDataSets.findIndex(s => s.data === document.getElementById('dataInput').value);
|
||
const nextIdx = (currentIdx + 1) % sampleDataSets.length;
|
||
document.getElementById('dataInput').value = sampleDataSets[nextIdx].data;
|
||
generateChart();
|
||
}
|
||
|
||
function clearData() {
|
||
document.getElementById('dataInput').value = '';
|
||
document.getElementById('chartArea').innerHTML = `
|
||
<div class="placeholder">
|
||
<p>📊</p>
|
||
<p>输入数据后点击"生成图表"</p>
|
||
</div>
|
||
`;
|
||
if (chartInstance) {
|
||
chartInstance.dispose();
|
||
chartInstance = null;
|
||
}
|
||
parsedData = null;
|
||
document.getElementById('seriesConfig').innerHTML = '<p class="hint-text">生成图表后可在此调整各系列的顺序和颜色</p>';
|
||
}
|
||
|
||
// ===== 导出图表 =====
|
||
function exportChart(format) {
|
||
if (!chartInstance) {
|
||
alert('请先生成图表');
|
||
return;
|
||
}
|
||
|
||
if (format === 'png') {
|
||
const url = chartInstance.getDataURL({
|
||
type: 'png',
|
||
pixelRatio: 2,
|
||
backgroundColor: document.getElementById('themeStyle').value === 'dark' ? '#1a1a2e' : '#fff'
|
||
});
|
||
const a = document.createElement('a');
|
||
a.href = url;
|
||
a.download = 'chart.png';
|
||
a.click();
|
||
} else if (format === 'svg') {
|
||
// 重新用 SVG 渲染
|
||
const svgChart = echarts.init(document.createElement('div'), null, { renderer: 'svg' });
|
||
svgChart.setOption(chartInstance.getOption());
|
||
const url = svgChart.getDataURL({
|
||
type: 'svg',
|
||
pixelRatio: 2
|
||
});
|
||
const a = document.createElement('a');
|
||
a.href = url;
|
||
a.download = 'chart.svg';
|
||
a.click();
|
||
svgChart.dispose();
|
||
}
|
||
}
|